Artificial Intelligence in Video Games: Towards a Unified Framework

Algorithm 12

Synchronization with virtual classes. The virtual class MovingEntity uses a pure virtual getter implemented by its concrete subclass Raven_Bot for its synchronization code.

class  MovingEntity:  public  BaseGameEntity

{

 ⋯

 //Virtual accessor − Retrieves the conceptual projection of this entity

 virtual  CptMvEntity2D  GetCptMvEntity2D()  const  = 0;

 ⋯

 void  SetVelocity(const  Vector2D &  NewVel)

 {

  m_vVelocity = NewVel;

  //Velocity changed, update conceptual data

  GetCptMvEntity2D()->SetVelocity(m_vVelocity);

 }

 ⋯

}

class  Raven_Bot:  public  MovingEntity

{

protected:

 //The conceptual projection

 CptMvAgent2D  cpt;

 ⋯

public:

 //Returns the entire conceptual projection of this bot

 CptMvAgent2D  GetCptMvAgent2D()  const  {  return  cpt; }

 //Returns the conceptual projection of the MovingEntity part of this bot

 CptMvEntity2D  GetCptMvEntity2D()  const  {  return  cpt; }

 //Returns the conceptual projection of the BaseGameEntity part of this bot

 CptEntity2D  GetCptEntity2D()  const  {  return  cpt; }

 ⋯

}